build.xml

<project name="Dokka" default="build">
    <typedef resource="org/jetbrains/kotlin/ant/antlib.xml" classpath="${kotlin.compiler}/lib/kotlin-ant.jar"/>
    <typedef resource="org/apache/maven/artifact/ant/antlib.xml" classpath="${basedir}/lib/maven-ant-tasks-2.1.3.jar"/>

    <property name="kotlinc.repeat" value="1"/>

    <target name="clean">
        <delete dir="out" />
        <delete dir="maven-plugin/target" />
    </target>

    <target name="build">
        <mkdir dir="out"/>

        <kotlinc src="src" output="out/dokka.jar">
            <compilerArg value="-Xrepeat"/>
            <compilerArg value="${kotlinc.repeat}"/>
            <classpath>
                <fileset dir="lib" includes="*.jar"/>
            </classpath>
        </kotlinc>
    </target>

    <target name="fatjar" depends="build">
        <jar jarfile="out/dokka-fat.jar">
            <manifest>
                <attribute name="Main-Class" value="org.jetbrains.dokka.DokkaPackage" />
            </manifest>

            <zipgroupfileset dir="lib">
                <include name="**/*.jar" />
                <include name="*.jar" />
            </zipgroupfileset>
            <zipfileset src="out/dokka.jar">
                <include name="**/*" />
            </zipfileset>
        </jar>
    </target>

    <target name="install-fj" depends="fatjar">
        <pom id="stupidpom"
             groupid="org.jetbrains.dokka" artifactid="dokka-fatjar" version="1.0"
             name="Dokka fatjar"
             packaging="jar"
        />

        <writepom pomrefid="stupidpom" file="out/dokka-fat.pom" />
        <pom id="mypom" file="out/dokka-fat.pom" />

        <install file="out/dokka-fat.jar" pomrefid="mypom">
            <localrepository path="out/repo" />
        </install>
    </target>

    <target name="build-and-install" depends="install-fj">
        <mvn mavenversion="3.0.5" dir="maven-plugin" pom="maven-plugin/pom.xml">
            <arg value="install" />
        </mvn>
    </target>
</project>